Quldra
Your messages, secured against tomorrow's threats.
Quldra is a post-quantum encrypted messaging app available on iOS, Android, and in the browser. Private keys are generated and stored on-device only, no phone number is required, and all encryption happens client-side before messages are transmitted. It supports direct messages, group rooms, media sharing up to 200 MB, and guest browser sessions for non-app users.
Quldra encrypts all messages on-device using post-quantum algorithms (ML-KEM-768, ML-DSA-65, ChaCha20-Poly1305) before transmission through its relay servers, which only see encrypted payloads and cannot read message content.
Privacy-conscious individuals, small teams, and enterprise organizations seeking secure messaging
Background.
- Status
- launched
- Business model
- freemium
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